diff --git a/src/apis/axios.ts b/src/apis/axios.ts
index d821d20..1fe7f7e 100644
--- a/src/apis/axios.ts
+++ b/src/apis/axios.ts
@@ -1,11 +1,16 @@
 import axios from "axios";
 
-const accessToken = localStorage.getItem("access_token");
+const getToken = () => {
+  if (typeof window !== "undefined") {
+    return localStorage.getItem("access_token");
+  }
+  return null;
+};
 
 const Axios = axios.create({
   baseURL: process.env.NEXT_PUBLIC_BASE_URL,
   headers: {
-    Authorization: `Bearer ${accessToken}`,
+    Authorization: `Bearer ${getToken()}`,
     "Content-Type": "application/json;charset=UTF-8",
   },
 });
diff --git a/src/app/signin/process4/page.tsx b/src/app/signin/process4/page.tsx
index 920a2b2..15d2d6d 100644
--- a/src/app/signin/process4/page.tsx
+++ b/src/app/signin/process4/page.tsx
@@ -56,7 +56,9 @@ const SigninProcess4 = () => {
     };
 
     const data = await postUser(User);
-    localStorage.setItem("access_token", data.accessToken);
+    if (typeof window !== "undefined") {
+      localStorage.setItem("access_token", data.accessToken);
+    }
 
     dispatch(
       setToken({